Allertech 60-0032B No More Mildew Coating Spray, 32 oz AllerTech No More Mildew Protective Coatingforms an invisible, micro-thin coating to block mold, mildew and bacteria growth on treated surfaces .Resists mold and mildew growth for up to two years! AllerTech No More Mildew works on any surface where mold and mildew are prone to grow - brick, painted surfaces, aluminum siding, concrete or wall paper (not for use on glass or natural stone). Great for use in bath rooms, basements, crawl spaces or closets. Also great for use around pools, on boats, on decks, or even on the roof. Just spray No More Mildew on floors, walls, joists or exposed dirt Re-apply No More Mildew every couple of years, and mold and mildew could be a worry of the past (areas consistently exposed to water may require more frequent application).